(19)

(11)

EP 1 625 377 A1

(12)

(43) Date of publication: 15.02.2006 Bulletin 2006/07 (21) Application number: 03738931.9 (22) Date of filing: 16.05.2003

(51) International Patent Classification (IPC):  G01M 19/00(1968.09) (86) International application number: PCT/US2003/015699 (87) International publication number: WO 2004/106884 (09.12.2004 Gazette 2004/50)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (71) Applicant: WANNER ENGINEERING, INC. Minneapolis, MN 55403 (US)	(72) Inventors: LEHRKE, Kenneth, E. Maple Grove, MN 55311 (US) HEMBREE, Richard, D. Bellingham, WA 98229 (US) (74) Representative: Lotti, Giorgio et al C/o Ing. Barzanò & Zanardo Milano S.p.A. Corso Vittorio Emanuele II, 61 10128 Torino 10128 Torino (IT)